LaDue was a sixth-round pick (No. 181) by the Los Angeles Kings in the 2012 NHL Draft.

He played junior hockey with Alexandria of the North American Hockey League and Lincoln of the United States Hockey League. After being drafted by the Kings following his first season in the USHL, LaDue spent one more season with Lincoln before playing three seasons at the University of North Dakota, where he won a national championship in 2015-16.

LaDue signed a one-year contract with the Kings on April 30, 2016, and started his professional career with Ontario of the American Hockey League. His received his first NHL recall on Feb. 1, 2017, and had eight assists in 22 games with Los Angeles. LaDue scored his first NHL goal in a 3-0 win against the Dallas Stars on Jan. 30, 2018, and had four points (three goals, one assist) in 12 games with the Kings. He had one goal in two games for the Kings in the Stanley Cup Playoffs.

NOTES & TRANSACTIONS

• USHL First All-Star Team (2013)
• NCHC All-Rookie Team (2014)
• Signed as a free agent by Washington, October 10, 2020.
• Signed as a free agent by NY Islanders, September 20, 2021.